M$2.$A$\mathrm{.}8)$ How does an electric field get created at the P$-$N junction of PV cell? $($Select all that apply$).$

Question $4$ options:

Holes from the n$-$type layer diffuse into the p$-$type layer, leaving a region with negatively charged boron ions

Holes from the p$-$type layer diffuse into the n$-$type layer, leaving a region with negatively charged boron ions

Protons from the p$-$type layer diffuse into the n$-$type layer, leaving a region with positively charged phosphorous ions

Electrons from the n$-$type layer diffuse into the p$-$type layer, leaving a region with positively charged phosphorous ions$$